is compact single-head serging skirt and trousers panels without knee lining and small parts. the preseams :hem, fly curve can be serged manually at the sewing head.the side seams and inseams ns sewing fully automatically. the work piece is controlled by the contour guide,sewn,and stacked. freely programmable control. height-adjustable contour guide with quick adjustment. powerful sewing head for high sewing speed. automatic chain cutting and lint cutting without affecting sewing material transfer and stacking of the finish goods.